My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE75CA-E3/51
- Part No.:
- 1.5KE75CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75CA-E3/51.pdf
- Description:
- TVS DIODE 64.1VWM 104VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,224
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE75CA-E3/51 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 71.3 V to 78.8 V breakdown voltage (VBR), 64.1 V maximum working peak reverse voltage (VWM), 104 V clamping voltage at 14.6 A peak pulse current (IPPM), 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE75CA-E3/51 datasheet, 1.5KE75CA-E3/51 pinout, 1.5KE75CA-E3/51 application, or 1.5KE75CA-E3/51 equivalent, this device is selected for robust bidirectional clamping in automotive power rails, industrial I/O protection, telecom line interfaces, and DC power supply inputs where fast response (<1 ns), low clamping ratio, and AEC-Q101-compliant reliability are required.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for bidirectional transient suppression with symmetrical forward/reverse clamping behavior. Its 1500 W peak pulse rating (10/1000 µs) and 14.6 A IPPM enable reliable handling of high-energy surges without degradation under repetitive duty cycles ≤ 0.01 %.
The device exhibits a low incremental clamping resistance (ΔVC/ΔI ≈ 7.1 V/A at 10 A), a temperature coefficient of VBR of +0.105 %/°C, and thermal resistance of 15.4 °C/W (junction-to-lead), supporting stable performance in thermally constrained PCB layouts with minimal heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - Ensures reliable conduction onset above normal operating voltage while avoiding false triggering on ripple or transients below 71.3 V. |
| VWM | 64.1 V - Maximum continuous reverse voltage the device blocks without significant leakage; sets upper limit for protected circuit's steady-state voltage. |
| VC @ IPPM | 104 V - Clamped voltage seen by downstream components during 14.6 A surge; defines worst-case overvoltage stress on protected ICs or MOSFETs. |
| IPPM | 14.6 A - Peak surge current capability under standard 10/1000 µs waveform; determines minimum surge energy (≈1500 W × 1 ms) the device can absorb. |
| PPPM | 1500 W - Peak pulse power rating; enables protection against high-energy transients such as ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 surges. |
| TJ max. | +175 °C - High junction temperature rating supports operation in under-hood automotive environments and industrial enclosures without derating. |
| Leakage @ VWM | 1.0 µA - Ultra-low reverse leakage ensures negligible standby power loss and no interference with high-impedance sensor bias networks. |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward conduction mode | Provides low-VF path (≤5.0 V @ 100 A) during positive surges; symmetric with cathode for bidirectional clamping. |
| Cathode (unmarked end) | Current entry terminal in reverse conduction mode | Clamps negative transients to ≤104 V; identical electrical behavior to anode due to bidirectional symmetry-no polarity marking on 1.5KE75CA-E3/51. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions-enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 14.6 A-meets IEC 61000-4-5 Ed. 3 (4 kV, 2 Ω source) and ISO 16750-2 Pulse 5b requirements. |
| Sub-nanosecond response time | Clamping action initiates in <1 ns-faster than MOVs or GDTs, preventing voltage overshoot from damaging sensitive CMOS inputs. |
| AEC-Q101 qualified option available | 1.5KE75CAHE3_B variant meets automotive qualification; 1.5KE75CA-E3/51 is commercial-grade but shares identical package, electrical specs, and process flow. |
| Glass-passivated junction | Enhances long-term reliability and stability under humidity, thermal cycling, and high-temperature bias stress vs. epoxy-passivated alternatives. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump (ISO 16750-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between power rail and ground, absorbing surge energy before it reaches LDOs, microcontrollers, or CAN transceivers. Use Value: Limits rail voltage to ≤104 V during 14.6 A surges, preventing latch-up or gate oxide rupture in 3.3 V/5 V logic and enabling compliance with OEM EMC specifications. |
Use Scenario: Safeguarding 4–20 mA current-loop transmitters and analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs. IC Role / Device Role / Timing Role: Connected across sensor output and return, clamping ESD (IEC 61000-4-2 ±8 kV contact) and fast transients (IEC 61000-4-4 ±2 kV) on field wiring. Use Value: Maintains signal integrity with <1 µA leakage at 24 V nominal, avoids offset drift, and survives repeated 1500 W surges without parameter shift-critical for SIL-2 functional safety systems. |
| Telecom Line Interface Protection | DC Power Input Surge Suppression |
Use Scenario: Shielding RS-485/RS-422 differential data lines in outdoor base stations and remote radio units exposed to induced lightning surges. IC Role / Device Role / Timing Role: Placed line-to-line and line-to-ground in pairs to suppress common-mode and differential-mode transients per ITU-T K.20/K.44. Use Value: Symmetric 104 V clamping ensures balanced voltage stress on transceiver inputs, preserving common-mode rejection ratio (CMRR) and preventing data corruption during 10/1000 µs surges. |
Use Scenario: Front-end protection for 48 V DC power supplies in networking equipment and PoE injectors subjected to IEC 61000-4-5 surges. IC Role / Device Role / Timing Role: Shunt-connected between input and chassis ground, diverting surge current away from upstream rectifiers, PFC controllers, and bulk capacitors. Use Value: Absorbs 1500 W pulses without thermal runaway (RθJL = 15.4 °C/W), maintains VWM margin >10 V above 48 V nominal, and supports continuous operation at TJ ≤175 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same VBR (71.3–78.8 V) and VC (104 V), but lower PPPM = 600 W and IPPM = 5.8 A; SMB package (smaller footprint, higher RθJA). | Not suitable for 1500 W surge events; limited to lower-energy threats like ESD or IEC 61000-4-4 bursts. | Select SMBJ75CA only when space constraints prohibit DO-201AD and surge energy is confirmed ≤600 W. |
| 1.5SMC75CA | Identical electrical specs (VBR, VC, PPPM) and DO-214AB package; slightly higher RθJA (85 °C/W vs. 75 °C/W) but same RθJL (15.4 °C/W). | Compatible for same surge levels; preferred where surface-mount assembly is required instead of through-hole. | Choose 1.5SMC75CA for SMT production lines; 1.5KE75CA-E3/51 remains optimal for high-reliability through-hole designs with manual rework access. |
Compared with SMBJ75CA, 1.5KE75CA-E3/51 delivers 2.5× higher surge energy handling and superior thermal dissipation in high-power applications; versus 1.5SMC75CA, it offers identical protection performance in a through-hole package with proven mechanical robustness in vibration-prone environments.
Availability
1.5KE75CA-E3/51 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom line surge suppression, and DC power input surge suppression requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE75CA-E3/51 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, ruggedness, and application-specific validation.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated via proven silicon junction technology and rigorous qualification testing.
FAQ
What is the clamping voltage of the 1.5KE75CA-E3/51 at its rated peak pulse current?
The 1.5KE75CA-E3/51 has a maximum clamping voltage (VC) of 104 V at its rated peak pulse current (IPPM) of 14.6 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. The 1.5KE75CA-E3/51 maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is the 1.5KE75CA-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE75CA-E3/51 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes compliance with the RoHS directive (2011/65/EU), including restriction of lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. Its matte tin-plated leads meet J-STD-002 solderability requirements and JESD 201 Class 1A whisker resistance testing.
Can the 1.5KE75CA-E3/51 be used in automotive applications?
The 1.5KE75CA-E3/51 is commercial-grade and not AEC-Q101 qualified; however, its underlying design and process are shared with the AEC-Q101-qualified 1.5KE75CAHE3_B variant. For non-safety-critical automotive subsystems (e.g., infotainment power rails, lighting control), the 1.5KE75CA-E3/51 is widely deployed-but formal AEC-Q101 certification requires the HE3_B suffix version.
What is the maximum working voltage (VWM) for the 1.5KE75CA-E3/51?
The maximum working peak reverse voltage (VWM) for the 1.5KE75CA-E3/51 is 64.1 V. This is the highest continuous DC or RMS AC voltage the device can block without exceeding 1.0 µA reverse leakage current. Designers must ensure system operating voltage remains below this value to prevent premature conduction or accelerated aging.
How does the 1.5KE75CA-E3/51 differ from unidirectional 1.5KE75A variants?
The 1.5KE75CA-E3/51 is bidirectional, providing symmetrical clamping in both polarities with identical VBR, VC, and IPPM values. In contrast, the unidirectional 1.5KE75A has a cathode band marking and conducts only in reverse; its forward voltage drop (VF) is specified at 5.0 V (≥100 A), whereas the CA version has no defined VF due to bidirectional symmetry. Use 1.5KE75CA-E3/51 for AC, floating, or polarity-agnostic protection.
1.5KE75CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE75CA-E3/51 FAQ
1.How can I place an order for 1.5KE75CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75CA-E3/51 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KE75CA-E3/51 reliable?
The price and inventory of 1.5KE75CA-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE75CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75CA-E3/51?
1.5KE75CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75CA-E3/51 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KE75CA-E3/51?
For technical support, including 1.5KE75CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE75CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75CA-E3/51 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KE75CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE75CA-E3/51?
All 1.5KE75CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75CA-E3/51, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KE75CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE75CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75CA-E3/51 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
